soil test

Hey guys at the local nurserys they have these little soil meters to tell ph. You just stick it in the ground it runs off batterys i think. They are around 10 bucks / are they worth it will it help anything. Thanks for any advice you may have.

Have used an old Kelway pH tester for 20 years, and it has never been off more than 0.2 compared to a lab test. No batteries, no chemicals, just a mechanical instrument that also reads soil field capacity ratio (water content by %). About $100 at A.M.Leonard (<a href="https://www.amleo.com/help-desk/item.php?hb2">HB2</a>)

i have one i got at hd .in these dry conditions it reads
about 2 or so most of the time. think its either broke
or possibly all it ever did was measure the ph of the moisture in the soil.this one has a moisture and light meter as well.
plan on going back to hd and checking another one to se if mines
broke or they all do the same.later now